Soichiro Nagi and his friend Bob Makihara transfer into Todo High planning to rule the place by force, only to discover the school exists to train its students in the martial arts and is full of fighters far beyond them. After a beating, Soichiro is drawn into the Juken Club alongside the Natsume sisters, Maya and Aya, the latter of whom instantly declares herself his future bride. Their brawls soon entangle them in the standing feud between the Juken Club and its archrival, the Executive Council.